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v3.20.4

Credit Facilities, Long-Term Debt and Lease Liabilities - Other (Details) $ in Millions, $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 CAD ($) | Dec. 31, 2019 CAD ($) | Dec. 31, 2019 USD ($) | Oct. 22, 2020 | Jul. 20, 2018
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Interest rate |  |  |  | 4.07% | 4.509%
US Wind Projects - Big Level |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowing costs incurred | $ 112 | $ 122 |  |  |
Tax equity funding |  |  | $ 85 |  |
Lakeswind |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Borrowing costs incurred | $ 22 | 23 |  |  |
US Wind Projects - Antrim |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Tax equity funding |  |  | $ 41 |  |
Accelerated tax depreciation |  | $ 35 |  |  |
Other | 5.9% Unsecured Commercial Loan Obligation due 2023 |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |
Interest rate |  | 5.90% | 5.90% |  |

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